Adding lead magnesium niobate to lead titanate/lead zirconate to aid hot pressing to transparency

ABSTRACT

DISCLOSED IS AN ELECTROOPTIC SYSTEM INCLUDING A TRANSPARENT FERROELECTRIC CERAMIC ELEMENT WHICH POSSESSES MEMORY IN THAT A BIREFRINGENCE CORRESPONDING TO AN APPLIED ELECTRIC FIELD REMAINS AFTER THE FIELD IS REMOVED. THE ELECTROOPTIC ELEMENT IS HOT-PRESSED FROM A FAMILY OF MATERIALS WHICH COMPRISES SOLID SOLUTIONS OF THE TERNARY SYSTEM, LEAD MAGNESIUM NIOBATE-LEAD TITANATE-LEAD ZIRCONATE,   AND THE HOT PRESSED MATERIAL MAY ADDITIONALLY CONTAIN MINOR AMOUNTS OF LEAD BISMUTH NIOBATE OR BISMUTH OXIDE.

 

